The 81-year-old president lashed out when Holt pressed him on his disastrous June 27 debate performance and bristled when the journalist asked him about Trump’s running mate, JD Vance.

“Are you seeing what [viewers] saw, which was moments of frankly, that appeared to be — you appeared to be confused?” Holt asked the president.

“Lester, look, why don’t you guys ever talk about the 18, the 28 lies (Trump) told? Where are you on this? Why didn’t the press ever talk about that? Twenty-eight times it’s confirmed he lied in that debate,” Biden exclaimed.

“Seriously, you won’t answer the question, but why didn’t the press talk about all the lies he told? I haven’t heard anything about that.”

When Holt protested, “We have reported many of the issues,” Biden snapped back.

“No you haven’t! No you haven’t! God love you,” fumed Biden — who falsely claimed at the debate that no troops died on his watch and confusingly said he “finally beat Medicare.”

Later, Biden raised the fact that Vance, an Ohio Republican senator, had criticized Trump in 2016.

“Well, he said something about you,” Holt replied.

“He said some things about me, but see what he said about Trump. What’s up with you guys? Come on, man,” Biden chided.

At one point in the interview, Holt challenged the president when he launched into an extended criticism of Trump — despite using a rare Oval Office address Sunday night to call on Americans to “lower the temperature” following the assassination attempt on Trump.

“This doesn’t sound like you’re turning down the heat, though,” Holt said.

“Well, no, no, no, no,” the president replied, before launching into yet another diatribe against the Republican presidential nominee.

“Look, what I’m turning down — we have to stop the whole notion that there are certain things that are contrary to our democracy that we’re for. The idea of saying that you, that I didn’t win the election when every court in the land … including the conservative Supreme Court said we won, the idea of having a loyalty pledge from all of the folks,” he said, before trailing off.

“Well, no, no, no, no,” the president replied, before launching into yet another diatribe against the Republican presidential nominee.

Biden grew flustered yet again when Holt pressed him on whether he would agree to an extra debate against Trump to prove his mental prowess — in addition to the second and final scheduled debate on Sept. 10.

“Is there a sense of wanting to get back on the horse?” Holt asked.

“I’m on the horse, where have you been?” Biden rebuked the veteran journalist.

“I’ve done 22 major events … I’m on the horse, what I’m doing is going out and demonstrating to the American people that I’m in command of all my faculties.”

Asked if he had discussed his political future with former President Barack Obama, Biden said evasively, “I may have, I don’t think so.”

“The idea that I’m the old guy? I am. I’m old. But I’m only three years older than Trump, number one. And number two, my mental acuity has been pretty damn good,” he said.

Biden concluded the interview with another lecture.